Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c5ab91739570e1d…

MALICIOUS

PDF

67.8 KB Created: 2021-03-30 14:07:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 1a7d6fe822312825b2837ab3665c0c30 SHA-1: ecc39c1fef1bf1791b9c0c8b281b973a0e6f2607 SHA-256: 6c5ab91739570e1dbeab46371d6bae851b71ab56b48ad968812df83770e90cde
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body and embedded URLs suggest a phishing or scam attempt, masquerading as a free toolkit download to entice users to click on suspicious links. The presence of multiple external URIs, many hosted on disposable domains, further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://golowaki.ru/award?keyword=data+warehouse+lifecycle+toolkit+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/faxinomitux/fTxjiKz/spirit_riding_free_song_list.pdfIn PDF document text
    • http://helplnstagramoffice.com/how_to_breed_6iv_pokemon_ultra_sun2vzqi.pdfIn PDF document text
    • http://topdiscount.pro/case_simulator_things_2_mod_apk9oryl.pdfIn PDF document text
    • http://voseboler.iblogger.org/37867938341.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/gmmDvUj/fake_video_call_with_celebrity_best_funny_pranks.pdfIn PDF document text
    • http://dujerewogirovok.22web.org/xisasusejaki.pdfIn PDF document text
    • https://cdn.sqhk.co/laxegipo/UzlcIgj/tadateturiropawedoxadig.pdfIn PDF document text
    • http://ctyr.ru/42220076576y6s9r.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/ficjjji/89112224918.pdfIn PDF document text
    • https://cdn.sqhk.co/tavedikovo/hPgiIjh/funologezegikiketa.pdfIn PDF document text
    • https://cdn.sqhk.co/sipobufiw/thaewjd/craftsman_gold_6._75_lawn_mower_oil_capacity.pdfIn PDF document text
    • http://iciko.xyz/wofufesopalelibupabarf8ve.pdfIn PDF document text
    • https://cdn.sqhk.co/laxuweredex/gg356cp/66760871756.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/batiku/nasisuzuvodapu.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/wavuwapazapevoguza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39657431-5660-471b-8da7-3af10bf09879/2004_dodge_ram_5.7_towing_capacity.pdfIn PDF document text
    • http://mibelajute.epizy.com/ios_xr_firmware_upgrade_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/atletico_madrid_vs_arsenal_match_report.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/42874201432.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/wallpaper_white_flower_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5dc3acd-4ccc-497c-8c89-cd6a595679a8/how_to_use_element_roku_tv_without_remote.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD47 5500 bytes
SHA-256: 05b2c3c8c398f483bec3392179f2884ba2a407736729eb1aebf9bcf9aebcc7cf
font_01_sfnt_off0000e015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE015 9820 bytes
SHA-256: 3bd14095cb07ace60a94c3845056bb36156fba12a03ee294dc49aac374a62d1b

Open this report in the interactive analyzer, or submit your own file for analysis.